Pump casing



FIG. 1 is a top and right perspective view of a pump casing.

FIG. 2 is a top and left perspective view thereof.

FIG. 3 is a bottom and left perspective view thereof.

FIG. 4 is a front elevation view thereof.

FIG. 5 is a rear elevation view thereof.

FIG. 6 is a left side elevation view thereof.

FIG. 7 is a right side elevation view thereof.

FIG. 8 is a top plan view thereof; and,

FIG. 9 is a bottom plan view thereof.

The broken lines shown in the drawings illustrate portions of the pump casing that form no part of the claimed design. 

CLAIM The ornamental design for a pump casing, as shown and described. 